Hydrostatic Guided Cylindrical Direct Drive for Lathes

为了降低机床进给轴的生产成本，提高进给轴的动力学性能是机床进给轴发展的一个重要方面。滚珠丝杠进给轴可实现的动力学受到机械传动元件的限制。在直线直接驱动轴的情况下，运动质量是限制因素。解决这种冲突的一种方法是使用直接驱动多坐标系统。由于两个运动轴的直接驱动，串行轴的安排是不必要的。这可以减少运动质量，从而改善动力学。在分割的基础项目“平面机床直接驱动”中，IFW显示了机床多坐标驱动的潜力。合作伙伴Franz Kessler GmbH和Gildemeister Drehmaschinen GmbH以及IFW确信将这项技术转移到流体静压导向，线性旋转直接驱动上。其目的是创建一种馈入驱动系统，该系统将静压导向的优点与直接驱动技术的优点结合起来，在两个自由度内具有较小的运动质量。目标进给驱动模块是一个b - y轴车削和铣削中心。本课题的主要成果是将IFW开发的方法进行转移，并进一步研究多坐标驱动技术在机床精度、动力学、刚性和工业适用性方面的特点。

In order to reduce production costs, a key aspect in the development of machine tool feed axes is to enhance dynamics. The achievable dynamics of feed axes with ball screws are limited by the mechanical transmission elements. In the case of axes with linear direct drives the moving mass is the limiting factor. One way to resolve this conflict is the use of direct drive multi-coordinate systems. Due to the direct actuation of two axes of movement, a serial axis arrangement is not necessary. This allows to reduce the moving mass which leads to improved dynamics. In the divided fundamental project "Planar Direct Drive for Machine Tools", the IFW has shown the potential of a multi-coordinate drive for machine tools. The partners Franz Kessler GmbH and Gildemeister Drehmaschinen GmbH as well as the IFW are convinced to transfer this technology to a hydrostatic guided, linear-rotary direct drive. The aim is to create a feed drive system that combines the benefits of the hydrostatic guidance with the advantages of the direct drive technology with small moving masses in two degrees of freedom. The aimed feed drive module is an B-Y-axis for turning and milling centers. The main result of the proposed project is the transfer of the developed methods from IFW, and the further research on the characteristics of the multi-coordinate drive technology in terms of precision, dynamics, rigidity and industrial applicability in machine tools.